# See the License for the specific language governing permissions and
# limitations under the License.
-# This module is used to model Nit source-file and locations in source-file
+# Nit source-file and locations in source-file
module location
# A raw text Nit source file
var filename: String
# The content of the source
- var string: String
+ var string: String is noinit
- # Create a new sourcefile using a filename and a stream
- init(filename: String, stream: IStream)
+ # The original stream used to initialize `string`
+ var stream: IStream
+
+ init
do
- self.filename = filename
string = stream.read_all
line_starts[0] = 0
end
super Comparable
redef type OTHER: Location
+ # The associated source-file
var file: nullable SourceFile
+
+ # The starting line number (starting from 1)
var line_start: Int
+
+ # The stopping line number (starting from 1)
var line_end: Int
+
+ # Start of this location on `line_start`
+ #
+ # A `column_start` of 1 means the first column or character.
+ #
+ # If `column_start == 0` this location concerns the whole line.
+ #
+ # Require: `column_start >= 0`
var column_start: Int
- var column_end: Int
- init(f: nullable SourceFile, line_s: Int, line_e: Int, column_s: Int, column_e: Int) do
- file = f
- line_start = line_s
- line_end = line_e
- column_start = column_s
- column_end = column_e
- end
+ # End of this location on `line_end`
+ var column_end: Int
# The index in the start character in the source
fun pstart: Int do return file.line_starts[line_start-1] + column_start-1
return res
end
- private var text_cache: nullable String
-
- init with_file(f: SourceFile) do init(f,0,0,0,0)
+ private var text_cache: nullable String = null
redef fun ==(other: nullable Object): Bool do
if other == null then return false
while line_end+1 < string.length and string.chars[line_end+1] != '\n' and string.chars[line_end+1] != '\r' do
line_end += 1
end
- var lstart = string.substring(line_start, l.column_start - 1)
+ var lstart
+ if l.column_start > 0 then
+ lstart = string.substring(line_start, l.column_start - 1)
+ else
+ lstart = ""
+ end
var cend
if i != l.line_end then
cend = line_end - line_start + 1